Deanna D. Sellnow is a professor of communication in the Nicholson School of Communication and Media at the University of Central Florida. Dr. Sellnow’s research focuses on strategic instructional communication in a variety of contexts including risk, crisis, health, and online settings. She has conducted funded research for the United States Geological Survey, Department of Homeland Security, and Centers for Disease Control and Protection. She has also collaborated with agencies such as the International Food Information Council about food security across the globe. She has published her work in numerous refereed articles in national and international journals, as well authored or co-authored several textbooks including Effective Speaking in a Digital Age, Communicate!, and The Rhetorical Power of Popular Culture.